other alien, fully naturalized barberry.
Differently from Japanese barberry, it
has flowers in racemes; the bark is of
light grayish color. Leaf margin is
bristle-toothed, not entire. The whole
plant is poisonous, except ripe
berries, which become edible. Unripe
barberry fruit (as well as the rest of
the plant) contain powerful alkaloids
and thus are poisonous.